But wait, it gets better! Kel performed the entire "Kenan & Kel" theme song — and still knew all the words by heart.

To refresh your memory, the theme song was originally sung by Coolio, and it was the pinnacle of '90s jams. Here are a couple of pics from the video's shoot, taken way back in June 1996. (If you didn't feel old yet, now you do.)

Jeff Kravitz / FilmMagic, Inc

Jeff Kravitz / FilmMagic, Inc

Almost 20 years later, Kel straight-up slayed the tune -- he doesn't even trip up once! Watch below and see how well YOU remember the lyrics!